Oil lamp



FIG. 1 is a side perspective view of an oil lamp showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a bottom side perspective view thereof;

FIG. 4 is a side elevational viw with all sides being identical;

FIG. 5 is another bottom, side perspective view opposite that of FIG. 3; and,

FIG. 6 is a top perspective view. 

The ornamental design for an oil lamp, as shown and described. 